My Inquiry
My Account
Texas Instruments SN74CBTD16210DLR
- Part No.:
- SN74CBTD16210DLR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74CBTD16210DLR.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,644
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74CBTD16210DLR from Texas Instruments is a 20-bit FET bus switch with integrated level shifting, designed for bidirectional 5-V-to-3.3-V signal translation in high-speed digital systems. It features dual 10-bit independent switching sections, 5-Ω typical on-state resistance, TTL-compatible control inputs, and operates across –40°C to 85°C. Used in memory expansion interfaces and mixed-voltage processor interconnects.
For engineers reviewing the SN74CBTD16210DLR datasheet, SN74CBTD16210DLR pinout, SN74CBTD16210DLR application, or SN74CBTD16210DLR equivalent, this page delivers verified electrical specs, package dimensions, functional pin roles, real-world use cases, and validated alternative parts - all grounded in TI's SCDS049H datasheet and official packaging documentation.
Technical Context
The SN74CBTD16210DLR implements two independent 10-bit FET-based transmission gates, each controlled by a dedicated OE input. Its internal diode-to-VCC structure enables passive level shifting without external components, supporting translation from 5-V inputs to 3.3-V outputs under load.
Propagation delay is dominated by the RC time constant of the 5-Ω on-resistance and 50-pF load capacitance, yielding 0.25 ns typical tpd. The device maintains high-impedance isolation (Cio(OFF) = 5.5 pF) when disabled, and draws only 1.5 mA ICC at VCC = 5.5 V with all controls static.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | 20-bit dual 10-bit FET bus switch with independent OE control |
| On-State Resistance | 5 Ω typical - minimizes voltage drop and propagation delay in high-speed data paths |
| Level Shifting | 5-V input to 3.3-V output via integrated VCC-clamp diode - eliminates need for external translators |
| Propagation Delay | 0.25 ns typical (A↔B, CL = 50 pF) - supports >1 GHz signal edge rates in backplane and memory interfaces |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V logic rails while enabling 3.3-V domain interfacing |
| Operating Temperature | –40°C to 85°C - qualified for industrial-grade embedded and communications equipment |
| Input Compatibility | TTL-level VIH ≥ 2 V / VIL ≤ 0.8 V - ensures robust noise margin with legacy 5-V microcontrollers and FPGAs |
Pinout & Package
SN74CBTD16210DLR uses a 48-pin SSOP (DL) package measuring 12.6 mm × 6.2 mm × 2.4 mm (max height), JEDEC MO-153 compliant, with 0.5-mm pitch and Q1 pin-1 quadrant orientation per tape-and-reel specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Input/Output Port A (Group 1 & 2) | Bidirectional data terminals for first and second 10-bit buses; connected to B ports when OE active |
| 1B1–1B10, 2B1–2B10 | Input/Output Port B (Group 1 & 2) | Bidirectional data terminals; level-shifted output side when A is driven at 5 V |
| 1OE, 2OE | Output Enable (Active-Low) | Independent control per 10-bit section; low = conductive path, high = high-Z isolation |
| VCC | Positive Supply | 5-V rail powering internal clamp diodes and switch bias; sets output high-level reference |
| GND (Pins 8, 17, 35, 44) | Ground Reference | Four dedicated ground pins reduce ground bounce and improve signal integrity in 20-bit parallel paths |
| NC (Pins 1, 48) | No Internal Connection | Unbonded pads - must remain unconnected per TI mechanical drawing DGG0048A and DL package spec |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 10-bit control | Enables flexible partitioning - e.g., one 10-bit channel for address, another for data - without cross-talk |
| 5-Ω low on-resistance | Reduces insertion loss and skew across 20-bit buses, critical for synchronous DDR and PCI-X timing budgets |
| Integrated level-shifting diode | Eliminates external resistors or translators in 5-V ↔ 3.3-V mixed-signal board designs |
| TTL-compatible OE inputs | Direct interface to legacy 5-V microcontrollers and CPLDs without level-shifter buffers |
| High off-isolation (5.5 pF Cio(OFF)) | Minimizes capacitive coupling between enabled and disabled channels in multiplexed I/O architectures |
Applications
| Memory Expansion Interface | Processor-to-Peripheral Bridge |
|---|---|
|
Use Scenario: Connecting a 5-V microcontroller address/data bus to a 3.3-V SRAM or Flash memory array. IC Role / Device Role / Timing Role: Bidirectional level-shifting bus switch enabling clean 5-V→3.3-V write cycles and 3.3-V→5-V read responses. Use Value: Eliminates discrete resistor-divider networks or dedicated level translators, reducing BOM count and PCB area by 3+ components per 10-bit channel. |
Use Scenario: Interfacing a 5-V FPGA configuration bus to 3.3-V peripheral ICs (e.g., UART, SPI flash, ADC). IC Role / Device Role / Timing Role: Isolating and translating control/data lines during FPGA reconfiguration and runtime operation. Use Value: Maintains sub-nanosecond propagation delay across all 20 lines, preserving setup/hold timing margins in high-frequency peripheral access. |
| Backplane Signal Multiplexing | Mixed-Voltage Test Equipment |
|
Use Scenario: Routing multiple 10-bit sensor data streams over a shared 5-V backplane to a 3.3-V processing module. IC Role / Device Role / Timing Role: Dual-channel switch enabling time-division multiplexing with independent enable control per sensor group. Use Value: Prevents voltage-domain contention and ground-loop noise via galvanic isolation between domains while retaining signal fidelity. |
Use Scenario: Programmable signal routing in automated test equipment handling both 5-V DUTs and 3.3-V instrumentation interfaces. IC Role / Device Role / Timing Role: Reconfigurable bus path selector with level translation for stimulus/response signal chains. Use Value: Supports hot-swappable test fixtures without redesign - same SN74CBTD16210DLR handles 5-V and 3.3-V DUT signaling natively. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FET bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16210DGGR | Same 20-bit dual-switch architecture but in TSSOP-48 (DGG); 70°C/W θJA vs. DL's 63°C/W; identical electrical specs. | Preferred for space-constrained layouts where 1.2-mm max height (vs. DL's 2.4 mm) is critical. | Select SN74CBT16210DGGR if board stack height is limited; verify thermal derating for continuous 128-mA channel current. |
| SN74LVC16245ADGGR | 3.3-V-only 16-bit transceiver with direction control; no level shifting; 32 mA drive strength; different pinout and function. | Suitable only for same-voltage bidirectional buffering - not a level-shifting replacement. | Choose SN74LVC16245ADGGR only when interfacing two 3.3-V domains and direction control is required; not interchangeable with SN74CBTD16210DLR. |
Compared with SN74CBTD16210DLR, SN74CBT16210DGGR offers identical switching performance in a lower-profile package but requires thermal reassessment, while SN74LVC16245ADGGR serves a fundamentally different function - voltage-level agnostic bidirectional buffering without translation capability.
Availability
SN74CBTD16210DLR is available at Aetrix Electronics and suitable for memory expansion interfaces, processor-peripheral bridges, backplane signal multiplexing, and mixed-voltage test equipment requiring stable component supply across industrial temperature ranges.
Supply support for SN74CBTD16210DLR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in logic and interface solutions.
The SN74CBTD16210DLR belongs to TI's Widebus™ family of high-speed bus switches, engineered specifically for low-latency, level-shifting interconnects in mixed-voltage digital systems.
FAQ
What is the maximum continuous current per channel for the SN74CBTD16210DLR?
The SN74CBTD16210DLR supports up to 128 mA continuous channel current, as specified in its absolute maximum ratings. This rating applies per switched path (A↔B) under steady-state conditions and must be observed alongside thermal limits - the DL package has θJA = 63°C/W, so power dissipation must remain within safe junction temperature bounds at full load.
Does the SN74CBTD16210DLR require external pull-up or pull-down resistors on its OE inputs?
No, the SN74CBTD16210DLR does not require external resistors on OE inputs. Its TTL-compatible control inputs (VIH ≥ 2 V, VIL ≤ 0.8 V) are internally biased; however, TI recommends holding all unused control inputs at VCC or GND to prevent floating states that could cause undefined switching behavior or increased ICC.
Can the SN74CBTD16210DLR translate signals from 3.3 V to 5 V?
No, the SN74CBTD16210DLR is designed specifically for 5-V-to-3.3-V level shifting via its internal diode-to-VCC structure. Driving port B at 3.3 V while expecting 5-V output on port A violates the device's architecture and may result in incorrect logic levels or excessive leakage - it is unidirectional in translation capability.
What is the pin-1 orientation and tape-and-reel specification for SN74CBTD16210DLR?
The SN74CBTD16210DLR uses Q1 quadrant pin-1 orientation in its 1000-unit tape-and-reel packaging (reel width W1 = 32.4 mm, pitch P1 = 16.0 mm). This matches TI's official packaging addendum and ensures compatibility with standard SMT pick-and-place feeders calibrated for JEDEC MO-153-compliant SSOP devices.
How does the SN74CBTD16210DLR handle fast edge rates in high-frequency applications?
The SN74CBTD16210DLR achieves 0.25 ns typical propagation delay due to its 5-Ω on-resistance and optimized FET layout, but TI cautions that level-shifting effectiveness diminishes at very high frequencies or with multiple simultaneous switching outputs - in such cases, the output may exhibit reduced voltage swing, requiring validation against actual signal integrity requirements.
SN74CBTD16210DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74CBTD
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74CBTD16210DLR FAQ
1.How can I place an order for SN74CBTD16210DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74CBTD16210DLR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74CBTD16210DLR reliable?
The price and inventory of SN74CBTD16210DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74CBTD16210DLR is usually 5 days.
3.What payment methods are accepted for SN74CBTD16210DLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74CBTD16210DLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74CBTD16210DLR?
SN74CBTD16210DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74CBTD16210DLR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74CBTD16210DLR?
For technical support, including SN74CBTD16210DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74CBTD16210DLR requirements.
6.How does Aetrix verify that SN74CBTD16210DLR is sourced from the original manufacturer or authorized distributors?
All SN74CBTD16210DLR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74CBTD16210DLR meets industry standards.
7.What is the process for return or replacement of SN74CBTD16210DLR?
All SN74CBTD16210DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74CBTD16210DLR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74CBTD16210DLR part is unused and in its original packaging.
Return procedure for SN74CBTD16210DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74CBTD16210DLR Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
